Friday, 27 September 2013

numbers 1


  1. Find the number of positive integer n, such that the remainder is 7 when 2007 is divided by n.
  2. What is the remainder of (123456789 x 123456789 x 123456789 x 123456789) when it is divided by 8?
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Define f:R→R by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \ 0, ...